Class 12 Biology Chapter 2: Sexual Reproduction in Flowering Plants – 100 MCQs with Answers
1. The male reproductive organ in a flower is:
Answer: B) Stamen
2. The transfer of pollen grains from anther to stigma is:
Answer: C) Pollination
3. Double fertilization is found in:
Answer: B) Angiosperms
4. The pollen tube usually enters the ovule through:
Answer: B) Micropyle
5. Endosperm of angiosperms is usually:
Answer: C) Triploid
6. The fusion of male and female gametes is called:
Answer: B) Fertilization
7. The micropyle is a:
Answer: B) Small opening in ovule
8. The ovule after fertilization forms:
Answer: C) Seed
9. Pollination by insects is called:
Answer: C) Entomophily
10. The female gametophyte in angiosperms is:
Answer: B) Embryo sac
11. Embryo sac contains:
Answer: A) 8 nuclei, 7 cells
12. Development of embryo from zygote is called:
Answer: B) Embryogenesis
13. Anemophily refers to pollination by:
Answer: B) Wind
14. Persistent nucellus forms:
Answer: A) Perisperm
15. When both male and female flowers are present on the same plant, it is called:
Answer: B) Monoecious
16. The exine of pollen grain is made up of:
Answer: B) Sporopollenin
17. Which layer in anther produces pollen grains?
Answer: A) Tapetum
18. Apomixis results in:
Answer: A) Seed formation without fertilization
19. The main function of endosperm is:
Answer: B) Nutrition to developing embryo
20. Cleistogamous flowers are:
Answer: B) Always self-pollinated
21. The ovary after fertilization develops into:
Answer: B) Fruit
22. Syngamy is:
Answer: A) Fusion of gametes
23. The main function of stigma is:
Answer: B) Receiving pollen
24. Vegetative propagation in grass occurs through:
Answer: A) Stolon
25. The antipodals in an embryo sac are:
Answer: B) 3
26. Pollination between flowers of same plant is:
Answer: B) Geitonogamy
27. Anemophilous flowers are:
Answer: B) Small and inconspicuous
28. The transfer of pollen from anther to stigma of the same flower is:
Answer: A) Autogamy
29. Endosperm development precedes embryo in:
Answer: C) Angiosperms
30. Polyembryony is:
Answer: C) More than one embryo in a seed
31. Endosperm is absorbed into cotyledons in:
Answer: B) Pea
32. Megasporogenesis is formation of:
Answer: B) Megaspores
33. Embryo sac is also known as:
Answer: B) Female gametophyte
34. Pollination by bats is called:
Answer: C) Chiropterophily
35. Triple fusion means fusion of:
Answer: B) 2 polar nuclei and one sperm
36. Hilum in seed is:
Answer: A) Scar left by stalk
37. Exalbuminous seed has:
Answer: B) No endosperm
38. Self-incompatibility is observed in:
Answer: B) Brassica
39. Seed coat is developed from:
Answer: B) Integuments
40. Fruit developing without fertilisation is:
Answer: B) Parthenocarpy
41. Pericarp is the:
Answer: B) Wall of ovary
42. Anemophilous flowers have:
Answer: B) Light, dry pollen
43. Fertilization in flowering plant occurs in:
Answer: A) Ovary
44. The tube cell is also called:
Answer: B) Vegetative cell
45. Nucellus is:
Answer: C) Remnant inside ovule
46. Seedless varieties of fruits often arise due to:
Answer: A) Parthenocarpy
47. Albuminous seeds have:
Answer: A) Large endosperm
48. The cotyledon in monocot seed is called:
Answer: A) Scutellum
49. Synergids function to:
Answer: A) Attract pollen tube
50. Double fertilization produces:
Answer: B) Zygote and endosperm
51. Pollen viability refers to:
Answer: A) Time pollen remains functional
52. Perisperm is:
Answer: B) Remnant of nucellus
53. Water pollination is found in:
Answer: A) Vallisneria
54. Apomixis advantage is:
Answer: C) Both
55. Self-incompatibility is controlled by:
Answer: A) Genetics
56. Generative cell divides to give:
Answer: C) Two male gametes
57. Polar nuclei fuse with:
Answer: B) Male gamete
58. Endosperm mutation causes:
Answer: A) Poor seed development
59. Main role of pollen germination is:
Answer: A) Fertilization
60. Ovule attachment point is:
Answer: C) Funicle
61. Albuminous seeds are found in:
Answer: A) Wheat
62. Seed dormancy is regulated by:
Answer: C) Both
63. Parthenocarpy is advantageous to man because:
Answer: B) Seedless fruits
64. Apomixis creates:
Answer: B) Clones
65. Testa is formed from:
Answer: A) Outer integument
66. Pollination in water plants is:
Answer: A) Hydrophily
67. Fruit dispersal helps in:
Answer: B) Wide distribution
68. Seed dormancy helps plant to survive:
Answer: B) Unfavourable conditions
69. Cotyledon in dicots is:
Answer: C) Two
70. Seeds with winged appendages are dispersed by:
Answer: C) Wind
71. Recalcitrant seeds are:
Answer: B) Do not tolerate desiccation
72. Flowers closing at maturity promote:
Answer: C) Cleistogamy
73. In maize, pollination is by:
Answer: B) Wind
74. Hypocotyl forms which part of seedling?:
Answer: A) Root
75. Seedless grapes develop by:
Answer: A) Parthenocarpy
76. Epiboly occurs in:
Answer: B) Embryogenesis
77. Main function of fruit is:
Answer: B) Protection and dispersal of seeds
78. Vivipary is observed in:
Answer: C) Mangrove
79. True fruit arises from:
Answer: A) Only ovary
80. Hybrid seeds may fail in next generation because:
Answer: A) Segregation of genes
81. The principal function of the ovule:
Answer: C) Seed formation
82. Self-incompatibility prevents:
Answer: B) Self pollination
83. Heterostyly promotes:
Answer: B) Cross-pollination
84. Which is the edible part in most nuts?:
Answer: C) Cotyledon
85. In coconut, edible part is:
Answer: A) Endosperm
86. Advantage of hybrid seeds:
Answer: A) Vigour and uniformity
87. Persistent calyx is found in:
Answer: B) Guava
88. Seeds of orchid are:
Answer: B) Small and minute
89. The female part of a flower is:
Answer: B) Gynoecium
90. Pericarp and seed coat fusion results in:
Answer: A) Caryopsis
91. Main reason for dormancy breaking is:
Answer: B) Light and temperature changes
92. The edible part of mango is:
Answer: B) Mesocarp
93. Osmosis in seed germination helps in:
Answer: A) Water uptake
94. Close association between pollen and stigma:
Answer: D) Pollination
95. In maize, part that develops into cotyledon is:
Answer: A) Scutellum
96. Endosperm in coconut is:
Answer: A) Liquid and solid
97. Monocot seeds are generally:
Answer: A) Albuminous
98. Stamens and carpels in separate flowers, but on the same plant:
Answer: B) Monoecious
99. Number of nuclei in a mature embryo sac:
Answer: C) 8
100. The development of fruit without fertilization is known as:
Answer: A) Parthenocarpy